Study of biological quality of lake waters based on phycocyanin using tree‐based methodologies

Author:

Kheimi Marwan1ORCID,Almadani Mohammad1ORCID,Ramezani‐Charmahineh Abdollah2,Zounemat‐Kermani Mohammad3ORCID

Affiliation:

1. Department of Civil Engineering, Faculty of Engineering—Rabigh Branch King Abdulaziz University Jeddah Saudi Arabia

2. Department of Water Engineering Shahrekord University Shahrekord Iran

3. Department of Water Engineering Shahid Bahonar University of Kerman Kerman Iran

Abstract

AbstractThe provision of drinking water, agricultural, and industrial applications by reservoirs has made lake exploration and monitoring unavoidable. The features of the ecosystem, particularly physical and chemical elements, influence the evaluation of the quality of water resources. Lakes undergo extensive qualitative changes due to their vast amount of water. In general, these bodies of water represent geological conditions as well as water contamination produced by natural and human activities. In the present research, the prediction of the amount of phycocyanin (fPC) in the water of Lake Michigan has been implemented employing four tree‐based machine learning techniques based on seasonality factors. Phycocyanin has significant effects on quality parameters such as turbidity, chlorophyll concentration, algal bloom, and dissolved oxygen in water by affecting the photosynthesis process of algae. Therefore, in this study, the prediction of the amount of phycocyanin dissolved in the lake water using the mentioned variables, along with the temperature of the water, specific conductance, and pH, has been able to interpret the quality of the water and the occurrence of phenomena such as algal blooms. The results of the models in predicting fPCs equal to 0.44 and 0.55 μg/L were consistent with the natural conditions of the lake, and it seems that ensemble tree–based models, along with the biological index of fPC, formed the right combination of input and output parameters in modeling and obtained the lowest prediction error (root‐mean‐square error [RMSE] boosted trees = 0.0140 and RMSE random forests = 0.0141 μg/L).

Funder

Ministry of Education

King Abdulaziz University

Publisher

Wiley

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